Alphagraphics, a printing company in Nashua, NH, works out of a three-story, 29,000-square-foot building that underwent a thermal upgrade consisting of HVAC upgrades, air sealing and an insulation retrofit through New Hampshire’s Better Buildings Program, funded by the DOE’s Better Buildings Neighborhood Program. Using spray foam in the building’s attic among these other thermal improvements, the roughly $30,000 retrofit project (pre-rebate) now saves the building 15.6% in annual energy usage and provides an estimated electricity savings of nearly 30,000 kWh each year. Improving your building’s insulation can help your building cut back on energy costs considerably, as it has at…